export default {
    methods: {
        touchStart(event) {
            this.direction = ''
            this.deltaX = 0
            this.deltaY = 0
            this.offsetX = 0
            this.offsetY = 0
            this.startX = event.touches[0].clientX
            this.startY = event.touches[0].clientY
        },
        touchMove(event) {
            const touch = event.touches[0]
            this.deltaX = touch.clientX - this.startX
            this.deltaY = touch.clientY - this.startY
            this.offsetX = Math.abs(this.deltaX)
            this.offsetY = Math.abs(this.deltaY)
            this.direction = this.offsetX > this.offsetY ? 'horizontal' : (this.offsetX < this.offsetY ? 'vertical' : '')
        }
    }
}
